bài 61

321-21.[(2.3³+4 ² :32)-52]

160:{17+[3² .5(14+2¹¹:2⁸)]}

2².5²(2008⁰ +8):3²

2.3³ +143:(2016⁰.6²-625:25)

2mu2.5mu2-(2008 mu0+8 ):3mu 2

2mu3.5mu2 -(2014 mu0+8):3mu2+ 0 mu23

2.3mu3+143:(2016mu0.6mu2 -625:25)

minh can ngay bay gio giup minh voi

4.5mu2-3mu2.(2018 mu0+3mu2)

giup minh voi minh can gap

de ma

250b :{5.[78-(1997-1969)]}

3.{150:[(3006-2854)-77

12:{390:[500-(125+35.7)]}

100-[(64-48).5+88]:28